Assjghob



G. H. ZOUCK.

BLOWPIPE.

APPLICATION min oc. 2a. 191B.

l. ,3 1 0, 1 00 Patented July 15, 1919.

i UNITED sTATEs PATENT oFEIoE.

GEORGE H. ZOUCK, 0F ORANGE, NEW JERSEY, ASSIGNOR T0 AIR REDUCTION COMPANY, INCORPORATED, A CORPORATION OF NEW YORK.

BLOWPIPE.

Specification of Letters Patent.

Patented July 15, 1919.

To all whom t may concern:

Be it known that I, Gannon H. Zopcx, a citizen of the United States, residin at Orange, in the county of Essex, State of ew Jersey, have invented certain new and useful Improvements in Blowpipes' and I do hereby declare the followin to be a full, clear, and exact description o the invention, such as will enable others skilled in the art to which it apper'rains to make and use the same.

This invention relates to blow pipes or torches, and has for its primary object, the provision of an inexpensive, simple andeilicient blow pipe structure in which the gas inlet passages are securely sealed to prevent premature mixing of the gases and including a replaceable tip. so constructed as to insure a proper relation by volume of combustible and oxidizing gases delivered to the discharge passage of the tip.

Further objects and advantages of my invention will be apparent, as it is better understood, by reference to the following specification when taken in connection with the wccompanying drawing illustrating the pre ferred embodiment thereof, in which Figure l is a longitudinal section through'the head and tip cfa WeldingV blow pipe or torch; Fig.

2 is'a transverse section throu h the head and Fig. 3 is an end elevation cfg-the tip.

Numerous forms of blow pipes have been heretofore designed, involving many diii'erent structures, but so far as applicant is aware, all have been subject to such disadvantages as leakage and premature mixing of thev gases, liability to back firing and genera] expensiveness of construction due to the number of parts employed and to intricacy of operations necessary in manufacture. The blow-pipe forming the'subjeot matter of the present application has been devised to overcome all 'of these numerous difficulties and to provide a structure which embodies, with the utmost simplicity, all of the desirable characteristics of an eilcient .blow-pipe capable of long continued use to perform its desired function.

Referrin to the drawing, 5 indicates a head to which two pipes 6 and 7 are secured and adapted to convey a supply of oxygen and of a combustible gas respectively. Withv within the head and the passage 9 has a branch 11 terminating in a channel 12 surrounding the branch l() of the passage 8. The head is provided with a seat having two conical surfaces 13 and 14 between the end of the branch 10 and the channel 12 and etween the channel 12 and the wall of the cad.

The tip 15 comprises a single piece having a longitudinal bore or outlet passage 16 axially disposed and adapted to aline with the branch 10 when the ti. is held in assembled relation with the hea by a threaded nut 17. The inner end of the ti is providedwith a conical recess correspon lng to the conical surfacesl and 14 and adapted, when engaged therewith, to form. a s-tight seal between the branch 10 and t e channel 12 and between the channel 12 and the wall of lthe head. To permit the passage of gas which may be formed by a milling operation or by pressing, in the surface of the conical recess at the inner end of the tip.

As will be readily understood, the oxygen supplied through the pipe 6 is delivered through the passage 8 and the branch 10 thereof directly to the discharge passage 16 of the tip. The combustible gas is delivered from the pipe 7 to the passage 9 and branch 11 thereof to the channel 12 and thence passes through the grooves 18 and is mixed with the oxygen from the branch 10 at the mouth of the discharge passage 16 and before the oxygen has entered the discharge passage; The result is aA thorough and complete mixture of the gases before they are discharged from the tip. 1

Tips having discharge passagesof diil'erent sizes are normally employed with the same head, the tips being interchangeable and relaceable by simplyremving the nut 17.

any desired mixture of oxygen and combustible gas, suitable to the size of the discharge passage 16 may be provided for and a proper mixture is always insured. The seals formed by engagement of the surface of the conical recess with the conical surfaces in the head, insures an absolutely `gas-tight joint, so that premature mixing of the gases or escape thereof, other than throng the `discharge passage, is prevented.

The structure isv exceedingly simple, re

quiring a minimum number of manufacturing operations, as will be readily apparent from an inspection of the drawin and I have thus provided' a blow-pipe a apted t0 be manufactured at a minimum expense and to be supplied in large quantities for commercial use. The only portion of the blowpipe which is liable to wear or injury, is the tip, and this may be Vreadily replaced, should it be injured by misuse, and the blow-pipe ma thus be restored to its original condition.

vi'hile the referred embodiment of the invention haspbeen shown, it will be understood that various changes in the details of construction may be made, without departin from the principle of the invention.

A claim- 1. A device of the character described comprisin a head having passages for oxidizing an combustible gases and a seat having a projecting conical surface surrounding the ends of both of said passages, a tip having a discharge passage, and a recess at its inner end provided with a conical surface conforinin to the surface of said seat and forming t erewith a gas tight joint, one of said conical surfaces havin a roove therein, forming a path wherey` tie gas from one of the passages in said head is delivered to and mixed with the gasissuin from the other passage and means for ho ding said tip in assembled relation with said head.

2. A device of the character described, comprising'a head having passages for oxidizing and combustible gases and a projecting conical seat surrounding the ends of both of said passages, a tip having a discharge passage, a conical recess at its inner end conforming t o said seat and forming therewith a gas tight joint and a groove in the face of said conical recess forming a path whereby the gas from one of the passa es in said head is delivered to and mixed with the gas issuin from the other p :a: and means for' hol ingsaid'tip in assembled relation with said head. l

3. A device of the character described, comprisin a head having passages for oxidizing an combustible gases and a projegting conical seat surrounding the ends of' both of said passages, a tip having a diS- charge passage, a conical recess at its inner end conforming to said seat and forming therewith a gas ti ht jointand a plurality of grooves in the ace of said conical recess forming a pathV whereb the gas from one of the passages in said liead is delivered to and mixed with Athe gas issuing from the othe i passagp and means for holding said led .relation with said head. 4`.A device of the character described) comprisin a head having passa es fooxi.-

dizing an ing conical seat surrounding the ends of both of said passages, a tip having an axial tip having a dischar combustible gases an a projectwhereby said gases are Amix discharge passage, a conical recess at its inner end conforming to said seat and forming therewith a gas-tight seal, said discharge passage being in alinement with one of the passages in said head and a radial groove in the face of said conical recess connecting the passages 'in said head whereby the two gases are mixed at the mouth of said discharge passage and means for holding said tip in assembled relation with said head.

5. A device of the character described, comprisin a head hav'mg passages for oxidizing an combustible gases and a sealing surface surrounding the ends of both of sai v passages, a tip having a discharge passage and a surface conformin to said 'sealing surface and coperating ierewith to form a gas-tight oint, and a radial groove in ne of said sur aces connecting the passages in said head, whereby the two gases are mixed at the mouth of said discharge passage when said tip is held in assembled relation with said head.

6. A device of the character described, coinprisin a head having passages-for oxidizing an combustible gases and a sealing surface surrounding the ends of both of said passages, a tip having a discharge passage and a surface conformingx to said sealing surface and cooperating t erewith to forni a' gas-tight joint, and a plurality of radial grooves in one of said surfaces connecting the passages in said head, whereby the two gases are mixed at the mouth vof said discharge passage when said tip is held in assembled relation with said head'.

7. A device of the character described, comprisin a head havin anl axial passage for oxidizing gas, an adjacent passage for combustible gas and a sealing surface suring asurface conforming to said sealing surface 'and forming therewith a .gas-tight joint, a dischargepassage in alinement with said axial passage, and a plurality of vgrooves radiating from the month of said ischarge passage to said channel, whereby said` gases are mixed at the mputh of said discharge passage when said'tip is held in assembled relation with said head.

8. lA device of the character described t comprising a head having passages for oxidizing and combustible gases,'a projecting conical seat and a channel iii said seat, a v passage, a conical recess at its inner en conf rming toV said seat and formi v therewit joint aigiriiaplura 't of roov in the ace of sai-dy ,acess iradi-a lng rom he mouth of said discharge passage to 'saidfchannel j at the mouth of said discharge p :f1 land means for ra gas-ti ht..

holding said tip in assembled relation with said head. l

9. A de vice of the character described comprising a head having two passages for oxidizing and combustible ses respectively, said passages terminating in a projecting conical seat, a channel in said seat communicating with one of said passages, a tip having a conical recess at its inner end adapted to en age said seat and to form a gas-tight joint therewith, a discharge passage in alinement with one of the passages in said head, a plurality of radial grooves in the recessed end of said tip connecting said channel and the mouth of said discharge passage and means for holding said sembled therewith.

, bustible tip 1n assembled relation with said head.

10. A device of the character described comprising a head having passages for oxidizing and combustible gases and a flattened projecting conical seat surrounding the ends of both of said passages, a tip having a discharge passage and a conical recess in its end conforming to said seat and forming therewith a gas-tight joint, a groove in the recessed end of said tip connecting the passages in said head and means for holding said tip in assembled relation with said head.

11. A device of the character described comprising a head having a seat and pas sages for oxidizing and combustible gases terminating therein, and a tip having a discharge passage in alinement and communicating with one of the passages in Said head, a surface conforming to said seat and a groove in said surface connecting the passages in said head when said tip is as- 12. A device of the character described, comprising a head having a rojecting conical seat and passages for oxi izing and comgases terminating therein, and a tip havin a discharge passage communieating with one of the passages in said head,

' in. said surface a conical recess at its inner end having a ormsurface conforming to said seat and ing therewith a gas tight joint and a groove connecting the passages in said head when said tip is assembled therewith.

13. A deviceof the character described,`

comprising a head having a seat and passages for oxidizing and combustible gases terminating therein, and a tip having an axial discharge passage communicating with one of the passages 1n said head, a surface conforming to said seat and a groove in said surface extending radially from the mouth of said discharge passage to the other passage in said head, said surface co erating with said seat beyond the end o said groove to prevent escape of gases when said tip is assembled with said head.

14. A device of the character described, comprising a head having a seat, an axial passage terminating therein, an annular' channel medially disposed in said seat surj rounding said passage, and a secondI passage terminating in said channel, and a tip having a discharge pass* e in alinement and communicating with t e axial passa e in said head, a surface conforming to sald seat and a groove in said surface between the mouth of said discharge passage and channel, said surface cooperating with said seat to prevent escape of gases when said tip is assembled with said head.

15. A device of the character described,

comprising a head having a projecting conical seat, and passages termlnating in said seat, and a tip having a discharge passage, a surfaceconforming to said seat .and a groove in said surface connecting said passages, said surface extending beyond the end of said groove and preventin escape of gases when said tip is assemb ed with said'head.

In testimony whereof I aiix my signature.

GEORGE H. ZOUCK. 

